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Develop low-cost and high-grade magnesia

2020-09-18 11:01:01
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It is generally believed that the global high-end refractory material market requires 98% MgO content for high-grade magnesia, a bulk density of sintered magnesia 3.40 g/cm3, and a bulk density of fused magnesia 3.50 g/cm3. Which is better for heavy burned magnesia, which is better for mid-range magnesia, and which is better for light burned magnesia. Ordinary fused magnesia market conditions The annual consumption of high-grade magnesia in high-temperature industrial sectors such as steel and cement is about 1 million tons. 

The total annual output of sintered magnesia in China is about 4 million tons. Around 1980, the export volume of cheap natural magnesia from China soared, and it has always occupied the international low-end magnesia market. Generally speaking, the current supply of low-end magnesia in the market exceeds demand. The output of this part of sintered magnesia should be controlled, especially the production of re-burned magnesia should be gradually reduced. Due to the decline in ore grades and the rise in fuel and labor prices, the quality of mid-range magnesia and high-purity magnesia has declined significantly. The market demand for mid-range and high-purity magnesia will increase in the future, because the trend of mid-range sand to replace heavy burned sand and high-purity sand to replace part of fused sand is obvious.

After more than 30 years of disorderly mining, it is an indisputable fact that high-quality magnesite ore has decreased and the quality of magnesia has decreased. At present, relevant companies gradually realize the importance of ore flotation and purification, and it is an inevitable trend to promote mineral processing technology. Starting with ore dressing to improve the grade of ore, use energy-saving and efficient light-burning equipment to produce high-activity light-burned magnesia, and improve the quality of high-purity sand through production methods such as dry high-pressure dry ball and clean fuel high-temperature calcination. It is also necessary to explore new processes and processes for the production of magnesia, in order to produce high-grade sintered magnesia with 98% MgO content and a bulk density of 3.40 g/cm3 at a low cost. The construction of a large-scale production plant integrating mineral processing and high-purity magnesia production is in line with the future development direction.


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Mobile: 15084042222 Chairman Zhu

Mobile: 13019619166 Former Manager

URL:www.gmref.cn

Address: Fanma Village, Mafeng Town, Haicheng City, Anshan City

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